nginx安装lua+redis

1.安装lua

1.1安装LuaJIT

[root@localhost ~]# yum install readline-devel
[root@localhost ~]# mkdir -p lua-file
[root@localhost ~]# cd lua-file/
[root@localhost lua_file]# wget http://luajit.org/download/LuaJIT-2.0.5.tar.gz
[root@localhost lua_file]# tar -zxvf LuaJIT-2.0.5.tar.gz 
[root@localhost lua_file]# ls
LuaJIT-2.0.5  LuaJIT-2.0.5.tar.gz
[root@localhost lua_file]# cd LuaJIT-2.0.5
[root@localhost LuaJIT-2.0.5]# make && make install PREFIX=/usr/local/luajit

1.2配置LuaJIT环境变量

[root@localhost lua-file]# vim /etc/profile

#/etc/profile 文件中加入环境变量
export LUAJIT_LIB=/usr/local/luajit/lib
export LUAJIT_INC=/usr/local/luajit/include/luajit-2.0

[root@localhost lua-file]# source /etc/profile

1.3 lua安装测试

[root@localhost lua-file]# vim hello.lua
print('hello world lua');

[root@localhost lua-file]# lua hello.lua 
hello world lua

2.ngx_devel_kit和lua-nginx-module

ngx_devel_kit简称NDK，提供函数和宏处理一些基本任务，减轻第三方模块开发的代码量。
lua-nginx-module是nginx的lua模块

[root@localhost ~]# mkdir -p /usr/local/src/nginx
[root@localhost ~]# cd /usr/local/src/nginx/
[root@localhost nginx]# wget https://github.com/simpl/ngx_devel_kit/archive/v0.3.0.tar.gz
[root@localhost nginx]# wget https://github.com/openresty/lua-nginx-module/archive/v0.10.9rc7.tar.gz
[root@localhost nginx]# ls
v0.10.9rc7.tar.gz  v0.3.0.tar.gz
[root@localhost nginx]# tar -zxvf v0.10.9rc7.tar.gz 
[root@localhost nginx]# tar -zxvf v0.3.0.tar.gz 

3.查看已安装好的nginx

3.1查看原安装

[root@localhost nginx]# /usr/local/nginx/sbin/nginx -V
nginx version: nginx/1.14.2
built by gcc 4.8.5 20150623 (Red Hat 4.8.5-36) (GCC) 
built with OpenSSL 1.0.2k-fips  26 Jan 2017
TLS SNI support enabled
configure arguments: --prefix=/usr/local/nginx --with-pcre --with-http_ssl_module --with-http_gzip_static_module

3.2 安装依赖

[root@localhost nginx]# yum -y install openssl openssl-devel zlib zlib-devel pcre-devel

3.3 进入nginx解压目录,安装扩展

[root@localhost ~]# cd nginx-1.14.2
[root@localhost nginx-1.14.2]# 

3.3.1.清空之前的编译文件
[root@localhost nginx-1.14.2]# make clean

3.3.2 执行 nginx -V 查看之前的编译参数

[root@localhost nginx-1.14.2]# /usr/local/nginx/sbin/nginx -V
nginx version: nginx/1.14.2
built by gcc 4.8.5 20150623 (Red Hat 4.8.5-36) (GCC) 
built with OpenSSL 1.0.2k-fips  26 Jan 2017
TLS SNI support enabled
configure arguments: --prefix=/usr/local/nginx --with-pcre --with-http_ssl_module --with-http_gzip_static_module

3.3.3 添加扩展执行编译

[root@localhost nginx-1.14.2]# ls /usr/local/src/nginx/
lua-nginx-module-0.10.9rc7  ngx_devel_kit-0.3.0  v0.10.9rc7.tar.gz  v0.3.0.tar.gz
[root@localhost nginx-1.14.2]# ./configure --prefix=/usr/local/nginx --with-pcre --with-http_ssl_module --with-http_gzip_static_module --add-module=/usr/local/src/nginx/lua-nginx-module-0.10.9rc7/ --add-module=/usr/local/src/nginx/ngx_devel_kit-0.3.0/

3.3.4.执行make (不能执行 make install)

[root@localhost nginx-1.14.2]# make

3.3.5.（打开新连接窗口操作）重命名 nginx 旧版本二进制文件，即 sbin 目录下的 nginx（期间 nginx 并不会停止服务）

客户端2
[root@localhost nginx-1.14.2]# cd /usr/local/nginx/sbin/
[root@localhost sbin]# ls
nginx
[root@localhost sbin]# mv nginx nginx.old
[root@localhost sbin]# ls
nginx.old

3.3.6.拷贝一份新编译的二进制文件到安装目录

[root@localhost nginx-1.14.2]# pwd
/root/nginx-1.14.2
[root@localhost nginx-1.14.2]# cd objs/
[root@localhost objs]# ll
total 9124
drwxr-xr-x. 3 root root      17 Nov 16 22:55 addon
-rw-r--r--. 1 root root   18837 Nov 16 22:55 autoconf.err
-rw-r--r--. 1 root root   68709 Nov 16 22:55 Makefile
-rwxr-xr-x. 1 root root 9132336 Nov 16 22:57 nginx
-rw-r--r--. 1 root root    5341 Nov 16 22:57 nginx.8
-rw-r--r--. 1 root root    7493 Nov 16 22:55 ngx_auto_config.h
-rw-r--r--. 1 root root     657 Nov 16 22:55 ngx_auto_headers.h
-rw-r--r--. 1 root root    6209 Nov 16 22:55 ngx_modules.c
-rw-r--r--. 1 root root   86808 Nov 16 22:57 ngx_modules.o
drwxr-xr-x. 9 root root      91 Nov 16 22:55 src
[root@localhost objs]# cp nginx /usr/local/nginx/sbin/
[root@localhost objs]# ls /usr/local/nginx/sbin/
nginx  nginx.old

3.3.7.在源码目录执行 make upgrade 开始升级

[root@localhost nginx-1.14.2]# make upgrade
/usr/local/nginx/sbin/nginx -t
nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful
kill -USR2 `cat /usr/local/nginx/logs/nginx.pid`
sleep 1
test -f /usr/local/nginx/logs/nginx.pid.oldbin
kill -QUIT `cat /usr/local/nginx/logs/nginx.pid.oldbin`

###查看是否安装成功
[root@localhost nginx-1.14.2]# /usr/local/nginx/sbin/nginx -V
nginx version: nginx/1.14.2
built by gcc 4.8.5 20150623 (Red Hat 4.8.5-39) (GCC) 
built with OpenSSL 1.0.2k-fips  26 Jan 2017
TLS SNI support enabled
configure arguments: --prefix=/usr/local/nginx --with-pcre --with-http_ssl_module --with-http_gzip_static_module --add-module=/usr/local/src/nginx/lua-nginx-module-0.10.9rc7/ --add-module=/usr/local/src/nginx/ngx_devel_kit-0.3.0/

启动nginx，如果有这个报错：nginx: error while loading shared libraries: libluajit-5.1.so.2: cannot open shared object file: No such file or directory

#解决方案
[root@localhost nginx-1.14.2]# vim /etc/ld.so.conf
#新增一条
 /usr/local/luajit/lib

#保存文件，执行ldconfig 	
[root@localhost nginx-1.14.2]# ldconfig

4 nginx引入lua调试

4.1 nginx.conf引入lua

[root@localhost conf]# pwd
/usr/local/nginx/conf
[root@localhost conf]# vim nginx.conf

	#关闭代码缓存 。修改lua脚本不需要重启
    lua_code_cache off;

	 #测试lua
    server {
        listen 81;
        server_name localhost;

        #设置变量
        set $test "hello world lua";
        location /lua_test {
                content_by_lua '
                        ngx.header.content_type="text/plain";
                        ngx.say(ngx.var.test);
                ';
        }
    }

4.2 重启nginx,执行访问

[root@localhost nginx]# killall nginx
[root@localhost nginx]# /usr/local/nginx/sbin/nginx
nginx: [alert] lua_code_cache is off; this will hurt performance in /usr/local/nginx/conf/nginx.conf:22

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